Locking device for loose-leaf binders.



No. 808,267. PATENTED DEC. 26, 1905. R. B. WILSON. LOOKING DEVICE FORLOOSE LEAF BINDERS.

APPLICATION FILED APE. 26.1905.

4 8 SHEETS-SHEET 1.

No. 808,267. PATENTED DEC. 26, 1905.

R. B. WILSON.

LOOKING DEVICE FOR LOOSE LEAF BINDEBS. APPLICATION rum) APR.26,1905.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

LOCKING DEVICE FOR LOOSE-LEAF BINDERS.

Specification of Letters Patent.

Patented Dec. 26, 1905.

Application filed April 26,1905. Serial No. 257,555.

To all whom/it may concern:

Be it known that I, RALPH BNVILsoN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Looking Devicesfor Loose-Leaf Binders; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, which form a part of this specification.

This invention relates to new and useful improvements in paper-files;and the object of the invention is to produce a simple and efiicientapparatus of this nature in which papers, letters, (520., may besecurely locked in a temporary binder.

The invention consists in various details of construction and incombinations and arrangements of parts,which will be hereinafter fullydescribed and then specifically defined in the appended claim.

My invention is illustrated in the accompanying drawings, which, withthe letters of reference marked thereon, form a part of thisapplication, in which drawings Figure l is a perspective view of myimproved binder, showing leaves locked thereto. Fig. 2 is across-sectional view on line 2 2 of Fig. i. Fig. 3 is a cross-sectionalview on line 3 3 of Fig. 4. Fig. 4: is a sectional view on line 4. 4 ofFig. 3. Fig. 5 is a sectional View on line 5 5 of Fig. at. Fig. 6 is asectional View on line 6 6 of Fig. 5. Fig. 7 is a perspective view ofthe longitudinally-movable plates and means for actuating the same. Fig.8 is a detail view of the wedge-shaped member.

Reference now being had to the details of the drawings by letter, A andA designate the two covers of the temporary binder, the former of whichis connected to a cross-piece B, and the latter is connected to a boxingC. Said cross piece or bar B carries the posts D, which are securelyanchored thereto, and each of said posts is hollow, as shown in Fig. 2of the drawings, and has a threaded wall adapted to receive a plug (Z.In the drawings there are shown two of said posts adapted to passthrough registering apertures E E in plates E (shown in Figs. 5 and 7 ofthe drawings) and through corresponding apertures in the boxing. Theplates E have apertures e in the inner and outer ends thereof, and lugsF are fastened to the bottom of the boxing and have shouldered portionsF, as shown in Fig. 6 of the drawings, upon which the plates E aresupported, the apertures E in said plates being of sufiicient size toallow limited longitudinal movements to said plates. The inner ends ofthe plates E are inclined, as shown at E in Fig. 5 of the drawings, andg designat'es a block which is shown clearly in Figs. 3 and 4 as beingfastened to the top and bottom of said boxing and is centrally aperturedto receive a screw H, one end of which is squared, as at H, to fit a keywhereby the screw may be rotated. The inner end of said screw has a head72 which is swiveled to the angled flange K of a plate K, said swiveledportion turning in a groove h. (Shown clearly in Fig. 8 of thedrawings.) Said plate K has two arms K which are spaced apart, and theouter marginal edges K of said arms are inclined and are adapted toengage the inner inclined ends of the plates E, (shown clearly in Fig. 5of the drawings,) while the space intermediate the arms is adapted toreceive the block Gr and guide the plate as it is moved backward andforward by means of the turning of the screw H. The boxing G has anaperture C opposite the end of the screw H, whereby the key may beinserted within the boxing for engagement with said screw.

It will be observed upon reference to Figs. 2 and L of the drawings thatthe marginal edges of the apertures E are brought to a sharp edge forthe purpose of biting into the circumference of the posts D when saidplates E. are forced frictionally against the posts by the movement ofthe inclined edges K against the inclined ends of the plates E, therebysecurely holding the boxing to the posts, and consequently locking thepapers between the covers.

Having thus fully described my'invention, what I claim as new, anddesire to secure by Letters Patent, is

A locking mechanism for binders, comprising, in combination with thecovers, a bar connected to one of said covers, posts secured to saidbar, a boxing secured to the other cover and having registeringapertures through which said posts are adapted to pass,longitudinally-movable plates mounted within said boxing and havinginclined ends and apertures to receive said posts, the marginal outlineof said apertures being brought to cutting edges, lugs projecting fromthe wall of the boxing and adapted to engage and guide saidlongitudinally-movable plates, a lug fastened to the boxing and having ascrew-threaded aperture, a screw passing through said threaded aperture,an angled plate in which the head of said screw is sWiveled, said angledplate having a slot, the marginal edges of which engage the oppositeedges of said screw-carrying lug and the outer edges of said angledplate being inclined, and adapted to engage 10 the inner inclined edgesof said longitudinallymovable plates, as set forth.

In testimony whereof I hereunto affiX my signature in presence of tWoWitnesses.

RALPH B. WVILSON. Witnesses:

LILLIAN A. COX, P. J. LEISCH.

